Mold.



W. N. BRITTON.

-MOLD.

APPLICATION FILED JULY 5. 191

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WILLIS N. BRITTOIN, OF ROCHESTER, NEW YORK.

MOLD.

Specification of Letters Patent.

Application filed. July 5, 1910. Serial No. 570,485.

To all whom it may concern:

Be it known that I, WiLLIs N. BRITTON,.

of Rochester, in the county of Monroe and State of New York have invented a new and useful Improvement in Molds, which improvement is fully set forth in the following specification and shown in the accompanying drawings.

The present invention relates to molds and more particularly to the type employed for molding concrete or similar plastic material.

It has for an object to provide a construction which may be utilized for directly building the wall from concrete as distinguished from molding the concrete into blocks and then building the wall from the blocks, although some of the features of the invention are capable of being utilized in block molds.

To these and other ends the invention consists of certain parts and combination of parts to be hereinafter more particularly described, the novel features thereof being pointed out in the appended claims.

In the drawings: Figure 1 is a perspective view of a portion of a wall constructed by the herein described mold; Fig. 2 is a top view of the mold arranged in position upon a wall; Fig. 3 is a side view of the mold; Fig. & is an end view shown on an enlarged scale with the end walls removed; Fig. 5 is a section on the line a-a Fig. 2; Fig. (3 illustrates, in side elevation, one end of the mold with a corner-forming device attached thereto; Fig. 7 is a horizontal section on the line b-b Fig. 6; Fig. 8 is a side elevation opposite to that shown in Fig. 6 of the mold and the corner-forming device; Fig. 9 is an end view of the mold and the corner-forming devices; Fig. 10 is a top view of one end of the mold with a movable end wall attached thereto; Fig. 11 is an end view of the mold with the end wall attached thereto; Fig. 12 is a section on the line cc Fig. 11; Figs. 13 and 1 1 are sections taken respectively on line (Zd of Fig. 9 and line e@ of Fig. 11; Fig. 15 is a section on -a line f-f Fig. 10; and Fig. 16 is a section on the line gg Fig. 10.

In the embodiment of the invention herein illustrated the mold comprises two outer face-forming members A and B each of which embodies effective portions 1 made in this instance from sheet material and riveted or otherwise secured to a rectangular frame 2 made from angle iron and braced at intervals by transverse pieces 8. The latter may also serve as supports for handles 4 that are utilized for carrying the mold.

The outer face-forming members are movable toward and from each other so as to clear the wall after each molding operation and are in this instance connected together at points above their effective faces, so that they may be separated or spaced at their end and bottom edges wherebythe mold may be caused to overlap a portion of the wall previously formed. Any number of such connections may be employed but preferably one is arranged at each end of the mold and comprises a lower guide member or bar 5 and an upper guide member or bar 6 both in this instance formed from angle iron and arranged transversely of the face-forming members. Each guide bar has one of the outer face-forming members secured thereto and preferably adjustable along the same for the purpose of obtaining walls of diiferent widths. The connections between the face-forming members and the guide bars are, in this instance, in the form of lateral extensions 7 and 8 at the ends of the outer face-forming members said extensions being secured respectively to the guide bars 6 and 5 by bolts 9, additional bolt openings 10 being provided to permit the outer face-forming members to be adjusted on the guide bars. Each guide bar may have rigidly secured thereto a bolt 12 which projects through a slot 13 in the other. It is desirable to close the slot 13 in the upper bar against the entrance of the cement and to this end a plate 14 covers the slot and is secured by the bolt 12.

I For the purpose of forming hollow building walls the mold may be provided with inner face-forming members 15 and 16 which cooperate with opposite faces of the hollow of the wall and are preferably constructed similarly to the outer face-forming member from sheet material and rectangular frames made from angle iron. The inner faceforming members are likewise connected above their effective surfaces and are adapted to be moved toward and from each other. In this instance they are respectively provided with lateral extensions 17 and 18 that are connected respectively with Patented Dec. is, rain.

of inner face-forming members is arranged between the outer face-forming members or in other words that an inner face-forming member and an outer face-forming member are carriedby each of the guide bars 5 and '6 with an inner face-forming member on one guide located between the outer and inner face-forming member on the other guide bar, so that, when the outer face-forming members are moved away from each other and away from the wall, the inner face forming members will be moved toward each other and away from faces of the hollow of the wall.

For the purpose of permitting the mold to be filled sufliciently with the plastic material, hopper extensions 20 and 21 may be provided respectively on the outer faceforming members A and B. It is, of course, desirable to prevent any over fiow passing between the inner face-forming members and to this end there is provided an eXtension 22 on the inner face-forming member 16 to overlap the inner face-forming member 15 and form a closure for the space between said members.

Any suitable means may be employed for moving the inner and the outer face-forming members, but in this instance there is provided one or more toggles preferably two, one at each end of the mold. One link 23 of each toggle is connected at 24 to the upper guide bar 6, while the other link 25 is connected at 26 to the lower guide bar 5, it being apparent that, when the toggle is broken, the outer face-forming members will move away from each other and the inner face-forming members will move toward each other, and that, when the toggle is straightened, the outer face-forming members will move toward each other and the in ner face-forming members will move away from each other. In straightening the toggle, the knuckle thereof may be moved slightly below a plane through the axes 24 and 26 so that the toggle may also serve for locking the face-forming members in their operative positions. In order to simultaneously actuate the toggles there maybe provided an operating member 27 of U-shaped formation having its arms connected to and integral with the links 25, so that when it is swung upward the toggle will be broken and when it is swung downwardly the toggle will be straightened, the operating member being arranged at a slight angle to the links 25 in order to permit the locking of the toggle.

The mold may have an end wall which is removable so that the mold, when the end wall is removed, may overlap a portion of formed building wall or the end wall may be used to give a finished eifect to windows or doorways. With this object in view the ends of the outer face-forming members are provided with eyes 28 adapted to receive depending projections 29 formed on cars 30 arranged at opposite edges of the end wall. The end wall is preferably extensible in order to permit the' adjustment of the outer face-forming members relatively to each other and therefore may comprise two frame members 30 and 31 sliding one upon the other, and one having a headed projection 32 and guide ribs 33 while the other cooperates with the ribs 33 and is provided with a slot 34 in which the headed projection 32 operates. A plate 36 is secured to the frame 30 and operates between the frame 31 and plate 35 so as to be overlapped by the latter, the plate 35 being secured only at one edge at 37 to permit the movement of the plate 36 between it and said frame 31.

With the object in View of forming corners in the wall there may be provided a corner-forming device preferably of U- shape formation having one arm detachably connected to and forming a continuation of one of the outer face-forming members and the other arm detachably secured to and forming a continuation of the other outer face-forming member. The connecting portion between the arms is preferably extensible and is hinged to one arm and rigid with the other, so as to form with the latter a corner-forming member substantially of L-shape. The preferred manner of constructing the corner-forming device is to make the L-shaped member form a frame 39 and an L-shaped frame providing arms 40 and/ll and to cover the inner faces of the frames with sheet metal plates 42 and 43 respectively, the plate 43 being secured only at one edge at 44 so that it may overlap the plate 42. The frames 39, 40 and 41 are adjustably connected by bolts 45 so that one arm of the L-shaped member is extensible to adapt the mold for making walls of different thicknesses. The arm 41 is detachably secured to one end of the face-forming member B by means of projection 46 pirotally engaging in eyes 28 on said faceforming members; while the extensible arm of the L-shaped member is hinged at 47 to the arm 48 which forms a continuation of the outer face-forming membe A of the mold, and is detachably secured thereto by any suitable means, such as a sliding bolt 49 having projections 50 adapted to enter eyes 28 formed on the end of the face-forming members B. It will be noted that the ends of the arms of the corner-forming de vice snugly abut the ends of the face-forming members A, B so that close joints are provided. Further the securing means are located on the exterior faces of said parts so that they do not mar the faces of the formed wall.

There may also be provided means for forming hollows or air space in the corners. This means, in this instance, comprises a device in the form of a block 52 adapted to lie at one end of and at an angle to the hollow-forming means provided by the inner face-forming members 15 and 16, said device having a height as great as the height of the inner face-forming members and being provided with a portion 53 adapted to fit snugly between the inner face-forming member 16 and the outer face-forming member B, in order to make the width of the hollow of the corner equal to the width of the hollow in the other portions of the wall of the building.

As the mold is adapted for use without bottom or end walls some means must be provided for supporting it in position on a partially formed wall and to this end cross pieces 54 are embedded at intervals in the wall. These cross pieces also have the function of tying together the inner and the outer sections 55 and 56 of the wall. In order to secure the cross pieces in place there may be provided one or more devices for making notches or recesses 57 in the wall during its formation. Each of these devices comprises preferably two notch-forming members 58 and a connection 59 between them, the said connection straddling the hollow-forming means of the mold and resting on the latter and the tops of the faceforming members A and B as shown in Figs. 2 and 5.

In building a wall other than at the corners, the corner-forming device is removed and also if desired the extension end wall. The mold is placed in the position shown in Fig. 2 with the notch-forming devices in position thereon and is filled with cement up to the top of the hollow-forming means 15, 16 and then the cement is tamped. After this, operating means 27 is raised to separate the outer face-forming members and collapse the hollow-forming means, thus permitting the mold to be removed without marring the wall and leaving the ends of the formed portion in a rough state. The mold is then placed in position at the end of the section thus formed to partially overlap the same, and the operation is repeated, the roughened end of the molded wall sections permitting a complete union of the sections. In molding one section upon another, the mold is supported upon the tie pieces 5-1 which are then embedded in the' wall and serve also to tie the front and rear wall sections together. When a window or doorway is to be formed with the air space extending thereto, or if for any other reason a finished end is desired, the extensible end wall is fitted to the mold. The end wall be ing extensible of course permits the faceforming members to move relatively to each other. To form a window or door space with a closed air space in the wall the corner-forming device is attached to the mold without the hollow-forming member 52.

In molding a hollow corner, the cornerforming device is attached to an end of the mold and the hollow-forming block 52 is fitted in position. After the molding the latch or bolt 49 is operated so that the L- shaped corner-forming member may swing away from the molded corner before the mold is removed, thus preventing the marring of the corner and permitting the relative movement of the face-forming members of the mold.

A mold, constructed in accordance with this invention, makes it possible to build plastic walls at a very small cost, as not only is the cost of the mold slight, owing to its small size but the labor of building the wall is reduced to a minimum. It does away with the handling and carrying of building blocks and the waste due to the breaking of the blocks, while it makes it possible to obtain a wall which is one homogeneous mass and of any constituency desired by the builder. It is further possible to obtain a wall which is hollow throughout even to the corners, this giving greater air space and reducing the amount of material required in making the wall. Of course the face-forming members may be shaped to give a plane faced wall or to give a rock face or other design.

What I claim as my invention and desire to secure by Letters Patent, is

1. A mold comprising a pair of bars arranged one above the other and having opposed faces in sliding engagement with each other to permit a relative longitudinal movement of said bars, bolts passing vertically through the bars to maintain such sliding engagement, L-shaped wall-carrying members, and horizontally arranged bolts securing one arm of each L-shaped wall-carrying member against a vertical face of one of the slide bars, the L-shaped members on both bars being arranged on one and the same side of the bars so that they lie in a single plane.

2. A mold comprising a pair of bars having opposed faces in sliding engagement with each other to permit a relative longitudinal movement of said bars, one of said bars being arranged above the other, and each of said bars being provided with a p1urality of horizontally arranged bolt openings, at least two L-shaped members, each having one of its arms provided with bolt openings, bolts securing said arm against the vertical face of one of the slide bars, and two mold walls each secured to the other arm of one ofthe L-shaped members.

3. A molding machine comprising a pair of bars having opposed faces in engagement with each other to permit relative longitudinal movement of said bars, one of said bars being-arranged above the other, of two links each pivoted at one end to the other and at the other end to one of the bars, and two mold walls each secured to one of said slide bars, the mold walls being so positioned that, when the links are substantially alined, the walls are nearest to each other and when the pivotal connection between the links is raised, the walls will move away from each other.

4:. A molding machine comprising a pair of bars having opposed faces in engagement with each other to permit relative longitudinal movement of said bars, one of said bars being arranged above the other, of two links, each pivoted at one end to the other and at the other end to one of the bars, one of said links being extended beyond the pivot to provide an operating portion, and at least two mold walls each secured to one of said slide bars, the mold walls being so positioned that, when the links are substantially alined, the walls are nearest to each other and when the pivotal connection between the links is raised, the walls will move away from each other.

5. A molding machine comprising two pairs of bars each pair having opposed faces in engagement with each other to permit relative longitudinal movement of said bars, one of said bars being arranged above the other, of two links for each pair of bars, each link being pivoted at one end to the other and at the other end to one of the bars, one of said links being extended beyond the pivot and having rigid connection with the extension of the like link on the other pair of bars, and two mold walls, each secured to one of the slide bars of each pair, the mold walls being so positioned that when the links are substantially alined, the walls are nearest to each other and, when the pivotal connection between the links 1s raised,

- the walls will move away from each other.

6. A molding machine comprising a pair of outer face-forming members, movable toward and from each other, a pair of inner face-forming members movable toward and from each other, one of the inner face-forming members having a horizontal extension at its upper edge overlapping the upper edge of the other face-forming member to close the space between them, and hopper extensions projecting upwardly from both outer face-forming members above said overlapping extension.

7 A molding machine comprising two outer face-forming members, two inner faceforming members coextensive in length with the outer face-forming members, means for moving said memberssimultaneously in parallel lines to vary the distances between them, and an end wall for an end of said mold abutting the proximate ends of the two outer and the two inner face-forming members, being secured to the outer face-forming members and being free of the inner face-forming members, said end wall being freely extensible so that it may automatically accommodate itself to the width of the mold with the expansion and contraction of the latter.

8. A wall for molds formed of two frames each having a plate secured thereto, one of said plates being secured to its frame in such a manner that the other plate may slide between such first-named plate and its frame.

9. A mold embodying a plurality of parallel walls secured together but separated at their ends, said walls being provided at their opposite ends with vertically arranged eyes, and a mold attachment having at one side vertical pintles and at the other side a sliding bolt provided with alined projections whereby said attachment may be secured and locked to an end of the mold by engagement with the eyes on the latter, the pintles permitting said attachment to swing on the mold about a vertical axis away from a molded wall.

10. A mold embodying a pair of parallel walls secured together for movement one toward and from the other, and separated at their ends, the opposite ends of said walls each being provided with alined eyes, and a U-shaped mold attachment for connecting said walls at either end, one end of said attachment being provided with alined pintles to be fitted in the eyes at the end of one wall and the other end of the attachment being provided with a bolt with projections for fitting in the eyes at the end of the other wall.

11. A mold comprising a pair of parallel walls secured together for movement one toward and from the other and separated at their ends, each wall having alined vertical eyes at opposite ends, and a U-shaped member connecting the ends of the walls and having at one end pintles for engagement with the eyes at one end of one mold wall and at the other end a bolt with projections for engagement with the eyes at the proximate end of the other mold wall, said U- shaped member embodying two hinged parts permitting one to swing on the other and the other to swing on a mold wall.

In witness whereof, I have hereunto set my hand this 1st day of July, 1910, in the presence of two subscribing witnesses.

WILLIS N. BRITTON.

Witnesses H. H. SIMMS, A. M. WHITMORE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

